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Gong J, Li J, Bao X, Gao X. Variations in the Crystal Lattice of Tb-Dy-Fe Magnetostrictive Materials: The Lattice Constant Disturbance. MICROMACHINES 2023; 14:2166. [PMID: 38138335 PMCID: PMC10745486 DOI: 10.3390/mi14122166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 11/22/2023] [Accepted: 11/24/2023] [Indexed: 12/24/2023]
Abstract
In Tb-Dy-Fe alloy systems, Tb0.29Dy0.71Fe1.95 alloy shows giant magnetostrictive properties under low magnetic fields, thus having great potential for transducers, microsensors, and other applications. The C15 cubic crystal structure of Tb-Dy-Fe has long been thought to be the source of giant magnetostriction. It is surprising that such a highly symmetrical crystal structure exhibits such a large magnetostrictive strain. In this work, the lattice parameters of Tb0.29Dy0.71Fe1.95 magnetostrictive materials were studied by processing atomic-resolution images. The selected area diffraction patterns show a face-centered cubic structure, but the fast Fourier transform diagram shows that the cubic structure has obvious distortion. The lattice parameters obtained by geometric phase analysis (GPA) and Gaussian model-based fitting and calculation show that the lattice constants a, b, and c are not strictly equal, and small disturbance of the lattice constants occurs based on the cubic structure. The actual crystal structure of the Tb-Dy-Fe material is a slightly disturbed cubic structure. This variation in the crystal lattice is mainly caused by the inhomogeneous composition and may be related to the giant magnetostrictive properties of Tb-Dy-Fe alloy.
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Affiliation(s)
| | | | | | - Xuexu Gao
- State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, 30 Xue Yuan Road, Beijing 100083, China; (J.G.); (J.L.); (X.B.)
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Herrero CP, Ramírez R. Nuclear quantum effects in graphene bilayers. J Chem Phys 2019; 150:204707. [DOI: 10.1063/1.5096602] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Affiliation(s)
- Carlos P. Herrero
- Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas (CSIC), Campus de Cantoblanco, 28049 Madrid, Spain
| | - Rafael Ramírez
- Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas (CSIC), Campus de Cantoblanco, 28049 Madrid, Spain
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Lindsey RK, Fried LE, Goldman N. ChIMES: A Force Matched Potential with Explicit Three-Body Interactions for Molten Carbon. J Chem Theory Comput 2017; 13:6222-6229. [DOI: 10.1021/acs.jctc.7b00867] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rebecca K. Lindsey
- Physical and Life Sciences
Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Laurence E. Fried
- Physical and Life Sciences
Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Nir Goldman
- Physical and Life Sciences
Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
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Jain L, Mohapatra DR, Basu R, Misra DS, Misra A, Samajdar I. Effect of Interplay Between Isotropic Gases on Microstructural Evolution of Single Crystal Diamond. CRYSTAL RESEARCH AND TECHNOLOGY 2017. [DOI: 10.1002/crat.201700016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- L. Jain
- Department of Physics; Indian Institute of Technology Bombay; Mumbai 400 076 India
| | - D. R. Mohapatra
- Department of Physics; Indian Institute of Technology Bombay; Mumbai 400 076 India
| | - R. Basu
- Department of Metallurgical Engineering & Materials Science; Indian Institute of Technology Bombay; Mumbai 400076 India
| | - D. S. Misra
- Department of Physics; Indian Institute of Technology Bombay; Mumbai 400 076 India
| | - Abha Misra
- Department of Instrumentation and Applied Physics; Indian Institute of Science; Bangalore Karnataka 560012 India
| | - I. Samajdar
- Department of Metallurgical Engineering & Materials Science; Indian Institute of Technology Bombay; Mumbai 400076 India
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Well-defined linear Au n (n = 2-4) chains encapsulated in SWCNTs: a DFT study. J Mol Model 2017; 23:19. [PMID: 28050722 DOI: 10.1007/s00894-016-3200-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 12/16/2016] [Indexed: 10/20/2022]
Abstract
One-dimensional (1D) gold nanostructures have been extensively studied due to their potential applications in nanoelectronic devices. Using first-principles calculations, composites consisting of a well-defined linear Au n (n = 2-4) chain encapsulated in a (9,0) single-walled carbon nanotube (SWCNT) were studied. The translational energy barrier of a single Au atom in a (9,0) SWCNT was found to be 0.03 eV. This low barrier guaranteed the formation of Au n @ (9,0) SWCNT (n = 1-4) composites. Bond lengths, differential charge densities, and electronic band structures of the composites were studied. The average Au-Au bond lengths in the composites were found to be almost the same as those in the corresponding free-standing linear Au n . The average bond length increased as the number of Au atoms increased. Charge transfer in all of these composites was slight, although a few valence electrons were transferred from the (9,0) SWCNT and the Au chains to intercalations. The conductivities of the encapsulated linear Au n (n = 2-4) chains were enhanced to some extent by encapsulating them in the SWCNT.
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Herrero CP, Ramírez R. Quantum effects in graphene monolayers: Path-integral simulations. J Chem Phys 2016; 145:224701. [DOI: 10.1063/1.4971453] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Carlos P. Herrero
- Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas (CSIC), Campus de Cantoblanco, 28049 Madrid, Spain
| | - Rafael Ramírez
- Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas (CSIC), Campus de Cantoblanco, 28049 Madrid, Spain
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Prokhorov IA, Voloshin AE, Ralchenko VG, Bolshakov AP, Romanov DA, Khomich AA, Sozontov EA. X-ray diffraction characterization of epitaxial CVD diamond films with natural and isotopically modified compositions. CRYSTALLOGR REP+ 2016. [DOI: 10.1134/s1063774516060122] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Yu Y, Wu L, Zhi J. Diamant-Nanodrähte: Herstellung, Struktur, Eigenschaften und Anwendungen. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201310803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Yu Y, Wu L, Zhi J. Diamond nanowires: fabrication, structure, properties, and applications. Angew Chem Int Ed Engl 2014; 53:14326-51. [PMID: 25376154 DOI: 10.1002/anie.201310803] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Indexed: 11/12/2022]
Abstract
C(sp(3) )C-bonded diamond nanowires are wide band gap semiconductors that exhibit a combination of superior properties such as negative electron affinity, chemical inertness, high Young's modulus, the highest hardness, and room-temperature thermal conductivity. The creation of 1D diamond nanowires with their giant surface-to-volume ratio enhancements makes it possible to control and enhance the fundamental properties of diamond. Although theoretical comparisons with carbon nanotubes have shown that diamond nanowires are energetically and mechanically viable structures, reproducibly synthesizing the crystalline diamond nanowires has remained challenging. We present a comprehensive, up-to-date review of diamond nanowires, including a discussion of their synthesis along with their structures, properties, and applications.
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Affiliation(s)
- Yuan Yu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 (P.R. China)
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Kozhbakhteev EM, Skorikov VM, Milenov TI, Rafailov PM, Avdeev GV. Synthesis and some aspects of the formation mechanism of carbon structures under hydrothermal conditions. RUSS J INORG CHEM+ 2013. [DOI: 10.1134/s0036023613120152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Stoupin S, Shvyd'ko YV. Thermal expansion of diamond at low temperatures. PHYSICAL REVIEW LETTERS 2010; 104:085901. [PMID: 20366949 DOI: 10.1103/physrevlett.104.085901] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2009] [Indexed: 05/29/2023]
Abstract
Temperature variation of a lattice parameter of a synthetic diamond crystal (type IIa) was measured using high-energy-resolution x-ray Bragg diffraction in backscattering. A 2 order of magnitude improvement in the measurement accuracy allowed us to directly probe the linear thermal expansion coefficient at temperatures below 100 K. The lowest value measured was 2x10{-9} K-1. It was found that the coefficient deviates from the expected Debye law (T3) while no negative thermal expansion was observed. The anomalous behavior might be attributed to tunneling states due to low concentration impurities.
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Affiliation(s)
- Stanislav Stoupin
- Advanced Photon Source, Argonne National Laboratory, Illinois 60439, USA
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Occelli F, Loubeyre P, LeToullec R. Properties of diamond under hydrostatic pressures up to 140 GPa. NATURE MATERIALS 2003; 2:151-154. [PMID: 12612670 DOI: 10.1038/nmat831] [Citation(s) in RCA: 125] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2002] [Accepted: 01/06/2003] [Indexed: 05/24/2023]
Abstract
Diamond is the archetypal covalent material. Each atom in an sp(3) configuration is bonded to four nearest neighbours. Because of its remarkable properties, diamond has been extensively studied. And yet our knowledge of the properties of diamond under very high pressure is still incomplete. Although diamond is known to be the preferred allotrope of carbon at high pressure, the possibility of producing under pressure high-density polymorphs of diamond, including metallic forms, has been discussed. Structural changes have already been reported in diamond under non-hydrostatic pressures around 150 GPa and large deformation. However, measurements of the properties of diamond under hydrostatic pressure have been limited to below 40 GPa. Here, we report accurate measurements of the volume and of the optical phonon frequency of diamond under hydrostatic pressure up to 140 GPa. We show that diamond is more compressible than currently expected. By combining the volume and the frequency pressure shifts, we deduce that diamond remains very stable under pressure: it is a Gruneisen solid up to at least 140 GPa, and the covalent bond is even slightly strengthened under pressure. Finally, the optical phonon frequency versus pressure is calibrated here to be used as a pressure gauge for diamond anvil cell studies in the multi-megabar range.
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Affiliation(s)
- Florent Occelli
- Département de Physique Théorique et Appliquée, CEA/DAM/DIF, 91680 Bruyères-le-Châtel, France
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Vogelgesang R, Ramdas AK, Rodriguez S, Grimsditch M, Anthony TR. Brillouin and Raman scattering in natural and isotopically controlled diamond. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:3989-3999. [PMID: 9986299 DOI: 10.1103/physrevb.54.3989] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Hanzawa H, Umemura N, Nisida Y, Kanda H, Okada M, Kobayashi M. Disorder effects of nitrogen impurities, irradiation-induced defects, and 13C isotope composition on the Raman spectrum in synthetic Ib diamond. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:3793-3799. [PMID: 9986277 DOI: 10.1103/physrevb.54.3793] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Muinov M, Kanda H, Stishov SM. Raman scattering in diamond at high pressure: Isotopic effects. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:13860-13862. [PMID: 9975600 DOI: 10.1103/physrevb.50.13860] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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